Audi TT 2018 Bulb Size
Bulb size chart
This 2018 Audi TT bulb size page is designed to help you verify the correct bulb type by lighting position, so you can replace the right lamp without guessing. The TT uses LED lighting for many exterior and interior locations, while a few small utility lights use a different bulb type, making position-based lookup especially useful.
Whether you are replacing a failed light or checking what is installed before ordering parts, this page organizes the 2018 Audi TT lighting locations in a simple way. It covers common exterior items such as headlights, turn signals, brake lights, and license plate lights, along with interior and cargo-area bulbs that may differ from the main LED lighting setup.
Fitment on the 2018 Audi TT can vary by trim, lighting package, market, and body style, so always confirm the bulb by position and compare it with the one already installed before buying. Some versions use LED modules for many exterior lamps, while others may have different service parts depending on equipment level. If you are considering an aftermarket LED conversion, check for compatibility with the housing, connectors, and any warning-light or CAN-bus concerns. For the most reliable result, inspect the existing bulb or assembly first, especially for the 2825 interior and cargo-area bulbs, since those are more likely to be replaced as individual bulbs rather than complete LED units.
FAQ
What bulb type does the 2018 Audi TT use for the low beam headlight?
The 2018 Audi TT low beam headlight is listed as LED on this page. Because Audi lighting can vary by market and trim, confirm the installed setup before ordering a replacement.
What bulb type does the 2018 Audi TT use for the high beam headlight?
The high beam headlight is listed as LED for the 2018 Audi TT. If your car has a different lighting package, compare the existing part before purchase.
Are the fog lights on the 2018 Audi TT LED?
Yes, the front fog light bulb position is listed as LED. On some cars, the fog light may be part of a larger lighting assembly rather than a simple replaceable bulb.
What bulb type is used for the brake lights on a 2018 Audi TT?
The brake light bulb position is listed as LED. This usually means the brake light is integrated into an LED assembly rather than using a standard replaceable bulb.
What bulb type is used for the turn signals on the 2018 Audi TT?
Both the front and rear turn signal light bulb positions are listed as LED. Always verify the exact lamp location, since front and rear signals can be serviced differently.
What bulb type is used for the license plate lights on a 2018 Audi TT?
The license plate light bulb position is listed as LED. If one side is out, check whether the issue is the LED unit, wiring, or the housing itself.
Does the 2018 Audi TT use LED daytime running lights?
Yes, the daytime running light bulb position is listed as LED. On many Audi models, the DRL is integrated into the headlight assembly.
What bulb type is used for the reverse lights on the 2018 Audi TT?
The back up reverse light bulb position is listed as LED. If the reverse light fails, confirm whether the vehicle uses a serviceable bulb or a sealed LED module.
What bulb size is used for the glove box light on the 2018 Audi TT?
The glove box light bulb is listed as 2825. This is one of the few positions on this page that uses a non-LED bulb type.
What bulb size is used for the trunk or cargo area light on the 2018 Audi TT?
The trunk or cargo area light is listed as 2825. Check the installed bulb before ordering, since interior utility lights are more likely to be replaced individually.
What bulb type is used for the dome, map, and vanity mirror lights in the 2018 Audi TT?
Those interior positions are listed as LED. If the light is dim or flickering, the issue may be the LED unit rather than a standard bulb.
Can trim or package differences change the bulb fitment on a 2018 Audi TT?
Yes. Trim level, lighting package, market, and body style can affect the exact bulb or assembly used. That is why it is best to match the bulb by position and verify the installed part before buying.